Make the cmake check_lib macro more versatile. It first tries pkg-config, and if that fails it then check for libraries and required headers. Also cleaned up the output a little bit.

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6544 8ced0084-cf51-0410-be5f-012b33b47a6e

4 files changed, 83 insertions, 61 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f4aadd64d1..1adcd3502f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,9 +29,6 @@ if(Subversion_FOUND AND NOT DOLPHIN_WC_REVISION)
 	Subversion_WC_INFO(${CMAKE_CURRENT_SOURCE_DIR} DOLPHIN) # defines DOLPHIN_WC_REVISION
 endif()
 
-# TODO: Make this optional or even implement our own package detection
-include(FindPkgConfig REQUIRED)
-
 # Various compile flags
 add_definitions(-msse2 -Wall)
 
@@ -96,6 +93,8 @@ endif(CMAKE_BUILD_TYPE STREQUAL Release)
 # be needed by users is optional defaulting to ON, other stuff (like e.g.
 # sound backends) is completely optional.
 
+include(CheckLib)
+
 include(FindOpenGL REQUIRED)
 include_directories(${OPENGL_INCLUDE_DIR})
 
@@ -108,7 +107,7 @@ else()
 	message("ALSA NOT found, disabling ALSA sound backend")
 endif(ALSA_FOUND)
 
-pkg_search_module(AO ao)
+check_lib(AO ao QUIET)
 if(AO_FOUND)
 	add_definitions(-DHAVE_AO=1)
 	include_directories(${AO_INCLUDE_DIRS})
@@ -118,7 +117,7 @@ else()
 	message("ao NOT found, disabling ao sound backend")
 endif(AO_FOUND)
 
-pkg_search_module(BLUEZ bluez)
+check_lib(BLUEZ bluez QUIET)
 if(BLUEZ_FOUND)
 	add_definitions(-DHAVE_BLUEZ=1)
 	include_directories(${BLUEZ_INCLUDE_DIRS})
@@ -128,7 +127,7 @@ else()
 	message("bluez NOT found, disabling bluetooth support")
 endif(BLUEZ_FOUND)
 
-pkg_search_module(PULSEAUDIO libpulse)
+check_lib(PULSEAUDIO libpulse QUIET)
 if(PULSEAUDIO_FOUND)
 	add_definitions(-DHAVE_PULSEAUDIO=1)
 	include_directories(${PULSEAUDIO_INCLUDE_DIR})
@@ -162,28 +161,16 @@ else()
 	add_definitions(-DHAVE_X11=0)
 endif()
 
-pkg_search_module(XRANDR xrandr)
+check_lib(XRANDR Xrandr)
 if(XRANDR_FOUND)
 	add_definitions(-DHAVE_XRANDR=1)
-	message("Xrandr found")
 else()
 	add_definitions(-DHAVE_XRANDR=0)
-	message("Xrandr NOT found")
 endif(XRANDR_FOUND)
 
 option(ENCODE_FRAMEDUMPS "Encode framedumps in AVI format" ON)
 if(ENCODE_FRAMEDUMPS)
-	pkg_search_module(AVCODEC libavcodec>=52.72.2)
-	pkg_search_module(AVFORMAT libavformat>=52.64.2)
-	pkg_search_module(SWSCALE libswscale>=0.11.0)
-	if(AVCODEC_FOUND AND AVFORMAT_FOUND AND SWSCALE_FOUND)
-		message("libav found, enabling AVI frame dumps")
-		set(ENCODE_FRAMEDUMPS ON)
-		add_definitions(-DHAVE_AVCODEC)
-	else()
-		set(ENCODE_FRAMEDUMPS OFF)
-		message("libav not found, disabling AVI frame dumps")
-	endif()
+	check_libav()
 endif()
 
 find_program(XDG_SCREENSAVER xdg-screensaver)
@@ -251,9 +238,7 @@ include_directories(Externals/Bochs_disasm)
 add_subdirectory(Externals/Lua)
 include_directories(Externals/Lua)
 
-include(CheckLib)
-
-check_lib_and_header(LZO lzo2 lzo/lzo1x.h OPTIONAL)
+check_lib(LZO lzo2 lzo/lzo1x.h QUIET)
 if(LZO_FOUND)
 	message("Using shared lzo")
 	include_directories(${LZO_INCLUDE})
@@ -274,7 +259,7 @@ else(SDL_FOUND)
 	add_subdirectory(Externals/SDL)
 endif(SDL_FOUND)
 
-check_lib_and_header(SFML sfml-network SFML/Network/Ftp.hpp OPTIONAL)
+check_lib(SFML sfml-network SFML/Network/Ftp.hpp QUIET)
 if(SFML_FOUND)
 	message("Using shared sfml-network")
 	include_directories(${SFML_INCLUDE})
@@ -284,7 +269,7 @@ else()
 	include_directories(Externals/SFML/include)
 endif()
 
-check_lib_and_header(SOIL SOIL SOIL/SOIL.h OPTIONAL)
+check_lib(SOIL SOIL SOIL/SOIL.h QUIET)
 if(SOIL_FOUND)
 	message("Using shared SOIL")
 	include_directories(${SOIL_INCLUDE})
@@ -294,8 +279,13 @@ else()
 	include_directories(Externals/SOIL)
 endif()
 
-include(FindZLIB OPTIONAL)
+# If zlib has already been found on a previous run of cmake don't check again
+# as the check seems to take a long time.
+if(NOT ZLIB_FOUND)
+	include(FindZLIB OPTIONAL)
+endif()
 if(ZLIB_FOUND)
+	set(ZLIB_FOUND 1 CACHE INTERNAL "")
 	message("Using shared zlib")
 	include_directories(${ZLIB_INCLUDE_DIRS})
 else(ZLIB_FOUND)
@@ -308,17 +298,18 @@ if(WIN32)
 	find_library(GLEW glew32s PATHS Externals/GLew)
 	include_directories(Externals/GLew/include)
 else()
-	check_lib(GLU glu REQUIRED)
-	check_lib_and_header(GLEW GLEW GL/glew.h OPTIONAL)
-	check_lib_and_header(CG Cg Cg/cg.h OPTIONAL)
-	check_lib_and_header(CGGL CgGL Cg/cgGL.h OPTIONAL)
-endif()
+	check_lib(GLU GLU GL/glu.h REQUIRED)
 
-if(NOT GLEW_FOUND)
-	message("Shared GLEW not found, falling back to the static library")
-	add_subdirectory(Externals/GLew)
-	include_directories(Externals/GLew/include)
-endif(NOT GLEW_FOUND)
+	check_lib(GLEW GLEW GL/glew.h)
+	if(NOT GLEW_FOUND)
+		message("Shared GLEW not found, falling back to the static library")
+		add_subdirectory(Externals/GLew)
+		include_directories(Externals/GLew/include)
+	endif(NOT GLEW_FOUND)
+
+	check_lib(CG Cg Cg/cg.h)
+	check_lib(CGGL CgGL Cg/cgGL.h)
+endif()
 
 if(NOT (${CMAKE_SYSTEM_NAME} MATCHES "Darwin"))
 	include_directories(Externals/CLRun/include)
@@ -328,6 +319,7 @@ endif()
 option(DISABLE_WX "Disable wxWidgets (use CLI interface)" OFF)
 if(NOT DISABLE_WX)
 	include(FindwxWidgets OPTIONAL)
+	FIND_PACKAGE(wxWidgets COMPONENTS aui)
 
 	if(wxWidgets_FOUND)
 		include(${wxWidgets_USE_FILE})
diff --git a/CMakeTests/CheckLib.cmake b/CMakeTests/CheckLib.cmake
index ad068421b3..1785ae8ef3 100644
--- a/CMakeTests/CheckLib.cmake
+++ b/CMakeTests/CheckLib.cmake
@@ -1,34 +1,64 @@
-macro(check_lib var lib required)
-	pkg_search_module(${var} ${lib})
+include(FindPkgConfig OPTIONAL)
+
+macro(_internal_message msg _quiet)
+	if(NOT _quiet)
+		message("${msg}")
+	endif()
+endmacro()
+
+macro(check_lib var lib)
+	set(_is_required 0)
+	set(_is_quiet 0)
+	foreach(_arg ${ARGN})
+		if(_arg STREQUAL "REQUIRED")
+			set(_is_required 1)
+		endif()
+		if(_arg STREQUAL "QUIET")
+			set(_is_quiet 1)
+		endif()
+	endforeach()
+	if(ARGN)
+		list(REMOVE_ITEM ${ARGN} "REQUIRED")
+		list(REMOVE_ITEM ${ARGN} "QUIET")
+	endif()
+
+	if(PKG_CONFIG_FOUND AND NOT ${var}_FOUND)
+		string(TOLOWER ${lib} lower_lib)
+		pkg_search_module(${var} QUIET ${lower_lib})
+	endif()
+
 	if(${var}_FOUND)
-		message("${lib} found")
+		_internal_message("${lib} found" _is_quiet)
 	else()
 		find_library(${var} ${lib})
-		if(${var})
-			message("${lib} found")
+		foreach(_file ${ARGN})
+			find_path(${var}_INCLUDE ${_file})
+		endforeach()
+		if(${var} AND ${var}_INCLUDE)
+			_internal_message("${lib} found" _is_quiet)
 			set(${var}_FOUND 1 CACHE INTERNAL "")
 		else()
-			if(${required} STREQUAL "REQUIRED")
+			if(_is_required)
 				message(FATAL_ERROR "${lib} is required but not found")
 			else()
-				message("${lib} not found")
+				_internal_message("${lib} not found" _is_quiet)
 			endif()
 		endif()
 	endif()
 endmacro()
 
-macro(check_lib_and_header var lib header required)
-	find_library(${var} ${lib})
-	find_path(${var}_INCLUDE ${header})
-	if(${var} AND ${var}_INCLUDE)
-		message("${lib} found")
-		set(${var}_FOUND 1 CACHE INTERNAL "")
+macro(check_libav)
+	if(PKG_CONFIG_FOUND)
+		pkg_check_modules(LIBAV libavcodec>=52.72.2 libavformat>=52.64.2
+			libswscale>=0.11.0 libavutil>=50.15.1)
 	else()
-		if(${required} STREQUAL "REQUIRED")
-			message(FATAL_ERROR "${lib} is required but not found")
-		else()
-			message("${lib} not found")
-		endif()
+		message("pkg-config is required to check for libav")
+	endif()
+	if(LIBAV_FOUND)
+		message("libav found, enabling AVI frame dumps")
+		add_definitions(-DHAVE_LIBAV)
+	else()
+		message("libav not found, disabling AVI frame dumps")
 	endif()
 endmacro()
 
diff --git a/Source/Core/VideoCommon/CMakeLists.txt b/Source/Core/VideoCommon/CMakeLists.txt
index 15275707dd..5013ea07da 100644
--- a/Source/Core/VideoCommon/CMakeLists.txt
+++ b/Source/Core/VideoCommon/CMakeLists.txt
@@ -39,14 +39,14 @@ set(SRCS	Src/BPMemory.cpp
 			Src/XFStructs.cpp
 			Src/OpenCL/OCLTextureDecoder.cpp)
 
-if(ENCODE_FRAMEDUMPS OR WIN32)
+if(LIBAV_FOUND OR WIN32)
 	set(SRCS ${SRCS} Src/AVIDump.cpp)
 endif()
 
 add_library(videocommon STATIC ${SRCS})
 if(${CMAKE_SYSTEM_NAME} MATCHES "Linux")
-	if(ENCODE_FRAMEDUMPS)
-		target_link_libraries(videocommon avcodec avformat swscale avutil)
+	if(LIBAV_FOUND)
+		target_link_libraries(videocommon ${LIBAV_LIBRARIES})
 		add_definitions(-D__STDC_CONSTANT_MACROS)
 	endif()
 	add_definitions(-fPIC)
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/Render.cpp b/Source/Plugins/Plugin_VideoOGL/Src/Render.cpp
index ff5722d7db..06f03848c7 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/Render.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/Render.cpp
@@ -63,7 +63,7 @@
 #ifdef _WIN32
 #include "OS/Win32.h"
 #endif
-#if defined _WIN32 || defined HAVE_AVCODEC
+#if defined _WIN32 || defined HAVE_LIBAV
 #include "AVIDump.h"
 #endif
 
@@ -83,7 +83,7 @@ CGprofile g_cgfProf;
 
 RasterFont* s_pfont = NULL;
 
-#if defined _WIN32 || defined HAVE_AVCODEC
+#if defined _WIN32 || defined HAVE_LIBAV
 static bool s_bAVIDumping = false;
 #else
 static FILE* f_pFrameDump;
@@ -492,7 +492,7 @@ Renderer::~Renderer()
 
 	delete g_framebuffer_manager;
 
-#if defined _WIN32 || defined HAVE_AVCODEC
+#if defined _WIN32 || defined HAVE_LIBAV
 	if(s_bAVIDumping)
 		AVIDump::Stop();
 #else
@@ -1102,7 +1102,7 @@ void Renderer::Swap(u32 xfbAddr, FieldType field, u32 fbWidth, u32 fbHeight,cons
 	}
 
 	// Frame dumps are handled a little differently in Windows
-#if defined _WIN32 || defined HAVE_AVCODEC
+#if defined _WIN32 || defined HAVE_LIBAV
 	if (g_ActiveConfig.bDumpFrames)
 	{
 		s_criticalScreenshot.Enter();